spin axis of rotor
61Tire balance — Tire Balance, also referred to as tire unbalance or imbalance, describes the distribution of mass within an automobile tire and/or the wheel to which it is attached. When the tire rotates, asymmetries of mass cause the wheel to wobble for reasons …
62Crookes radiometer — The Crookes radiometer, also known as the light mill, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a spindle. The vanes rotate when exposed to light, with faster rotation for more …
63Airship — For other uses, see Airship (disambiguation). Dirigible redirects here. For the 1931 film, see Dirigible (film). Not to be confused with Balloon (aircraft) or Blimp. Airship …
64Brazil and weapons of mass destruction — Based on Brazil s history, it is believed that the country does not possess any weapons of mass destruction. Although a covert nuclear weapons program was pursued by Brazil under a military government in the 1980s, it ended with the rise of an… …
65Model aircraft — A die cast Boeing 747 400 model. Model aircraft are flying or non flying models of existing or imaginary aircraft using a variety of materials including plastic, diecast metal, polystyrene, balsa wood, foam and fibreglass. Flying designs range… …
66Strike Witches — Japanese light novel cover of Strike Witches volume 1 ストライクウィッチーズ Genre Military science fiction …
67Mendota Hills Wind Farm — Three of the turbines at Mendota Hills Wind Farm. The Mendota Hills Wind Farm is a wind farm in the U.S. state of Illinois near the village of Paw Paw in Lee County. It consists of 63 operating wind turbines. Each wind turbine stands 214 ft… …
